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Isoprene Emissions in Africa Inferred from OMI Observations of Formaldehyde Columns

Marais, Eloise Ann; Jacob, Daniel J.; Kurosu, T; Chance, Kelly V.; Murphy, J. G.; Reeves, C.; Mills, G.; Casadio, S.; Millet, D. B.; Barkley, M. P.; Paulot, F.; Mao, J. (European Geosciences Union, 2012)

We use 2005–2009 satellite observations of formaldehyde (HCHO) columns from the OMI instrument to infer biogenic isoprene emissions at monthly 1 × 1° resolution over the African continent. Our work includes new approaches ...

Regional warming from aerosol removal over the United States: Results from a transient 2010–2050 climate simulation

Mickley, Loretta J.; Leibensperger, E; Jacob, Daniel J.; Rind, D. (Elsevier BV, 2012)

We use a general circulation model (NASA Goddard Institute for Space Studies GCM 3) to investigate the regional climate response to removal of aerosols over the United States. We perform a pair of transient 2010–2050 climate ...

Global Concentrations of Gaseous Elemental Mercury and Reactive Gaseous Mercury in the Marine Boundary Layer

Soerensen, Anne L.; Skov, Henrik; Jacob, Daniel J.; Soerensen, Britt T.; Johnson, Matthew S. (American Chemical Society (ACS), 2010)

Gaseous elemental mercury (GEM) and reactive gaseous mercury (RGM) were measured during an eight month circumnavigation to obtain knowledge of their worldwide distributions in the marine boundary layer (MBL). Background ...

Impact of 2000–2050 Climate Change on Fine Particulate Matter (PM2.5) Air Quality Inferred from a Multi-Model Analysis of Meteorological Modes

Tai, A. P. K.; Mickley, Loretta J.; Jacob, Daniel J. (European Geosciences Union, 2012)

Studies of the effect of climate change on fine particulate matter (PM2.5) air quality using general circulation models (GCMs) show inconsistent results including in the sign of the effect. This reflects uncertainty in the ...

Gas-Particle Partitioning of Atmospheric Hg(II) and Its Effect on Global Mercury Deposition

Amos, Helen Marie; Jacob, Daniel J.; Holmes, C. D.; Fisher, Jenny Allison; Wang, Qiaoqiao; Yantosca, Robert M.; Corbitt, Elizabeth Sturges; Galarneau, E.; Rutter, A. P.; Gustin, M. S.; Steffen, A.; Schauer, J. J.; Graydon, J. A.; Louis, V. L. St.; Talbot, R. W.; Edgerton, E. S.; Zhang, Y.; Sunderland, Elynor M (Copernicus GmbH, 2012)

Atmospheric deposition of Hg(II) represents a major input of mercury to surface environments. The phase of Hg(II) (gas or particle) has important implications for deposition. We use long-term observations of reactive gaseous ...

The Role of the Ocean in the Global Atmospheric Budget of Acetone

Fischer, E. V.; Jacob, Daniel J.; Millet, D. B.; Yantosca, Robert M.; Mao, J. (Wiley-Blackwell, 2012)

[1] Acetone is one of the most abundant carbonyl compounds in the atmosphere and it plays an important role in atmospheric chemistry. The role of the ocean in the global atmospheric acetone budget is highly uncertain, with ...

Impacts of Changes in Land Use and Land Cover on Atmospheric Chemistry and Air Quality over the 21st Century

Wu, S.; Mickley, Loretta J.; Kaplan, J. O.; Jacob, Daniel J. (European Geosciences Union, 2012)

The effects of future land use and land cover change on the chemical composition of the atmosphere and air quality are largely unknown. To investigate the potential effects associated with future changes in vegetation ...

Climatic Effects of 1950-2050 Changes in US Anthropogenic Aerosols - Part 2: Climate Response

Leibensperger, E; Mickley, Loretta J.; Jacob, Daniel J.; Chen, W.-T.; Seinfeld, J. H.; Nenes, A.; Adams, P. J.; Streets, D. G.; Kumar, N.; Rind, D. (European Geosciences Union, 2012)

We investigate the climate response to changing US anthropogenic aerosol sources over the 1950–2050 period by using the NASA GISS general circulation model (GCM) and comparing to observed US temperature trends. Time-dependent ...

Nitrogen Deposition to the United States: Distribution, Sources, and Processes

Zhang, Lin; Jacob, Daniel J.; Knipping, E. M.; Kumar, N.; Munger, J. William; Carouge, C. C.; van Donkelaar, A.; Wang, Y. X.; Chen, D. (European Geosciences Union, 2012)

We simulate nitrogen deposition over the US in 2006–2008 by using the GEOS-Chem global chemical transport model at 1/2°×2/3° horizontal resolution over North America and adjacent oceans. US emissions of NOx and NH3 in the ...

Climatic Effects of 1950-2050 Changes in US Anthropogenic Aerosols - Part 1: Aerosol Trends and Radiative Forcing